Add Yahoo as a preferred source to see more of our stories on Google. It was a happy ending for Tonka the chimp, focus of the HBO docuseries Chimp Crazy, which aired its final episode on Sunday night.

New research suggests wild chimpanzees have developed a far more nuanced communication system than previously realized, using several mechanisms that combine their vocalizations to create new meaning.

Twenty-five years after the film's release, the chimps from "MVP" feel the lingering effects of a life in show business. Kelsea Petersen / The Athletic; Tim DiFrisco / Getty, Tom Pidgeon / Getty ...

New findings from Uganda’s Ngogo Chimpanzee Project challenge long-held assumptions about primate behaviour and child ...